PSD303B-70M STMicroelectronics, PSD303B-70M Datasheet - Page 61

• Manufacturer Part Number: PSD303B-70M
• Description: MCU 8BIT PROGRM 70NS 44-PQFP
• Manufacturer: STMicroelectronics

Specifications of PSD303B-70M

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 44-MQFP, 44-PQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 34. Timing of 16-Bit Non-Multiplexed Address/Data Bus Using R/W, E or R/W, DS
58
PSD3XX Family
PAD Input
R/W as R/W
BHE/PSEN
CSI/A19 as
Multiplexed
(High Byte)
Active High
Active Low
WR/V
See referenced notes on page 64.
RD/E as E
as A0-A15
(Low Byte)
A15/AD15
PC0-PC2,
PB0-PB7
PA0-PA7
Direct
CSI/A19
A0/AD0-
as BHE
as CSI
Inputs
PP
as E
as E
as E
AS
AS
(1)
or
(PSD3X1)
1
2
3
35
STABLE INPUT
STABLE INPUT
7
6
33
6
READ CYCLE
4
8
DATA VALID
DATA VALID
9
32
32
10
13
34
1
2
STABLE INPUT
STABLE INPUT
36
14
WRITE CYCLE
3
15
35
14
33
32
32
12
16
17
13
DATA
DATA
IN
IN
34